Changeset 1155

Timestamp:

Feb 26, 2008, 9:46:43 AM (16 years ago)

Author:

Markus Ringnér

Message:

Refs. #335, fixed for KNN

File:

• trunk/test/knn_test.cc (modified) (2 diffs)

trunk/test/knn_test.cc

@@ -213 +213 @@
   ////////////////////////////////////////////////////////////////
   // A test of when a test sample has no variables with non-zero
-  // weights in common with training samples: should give nan distance
-  ////////////////////////////////////////////////////////////////
-  *error << "test of predictions with nan distances\n";
+  // weights in common with training samples: should not vote
+  ////////////////////////////////////////////////////////////////
+  *error << "test of predictions with nan distances (set to infinity in KNN)\n";
   weights1.all(1);
   weights1(1,0)=weights1(1,1)=weights1(2,0)=weights1(2,1)=0.0;
@@ -224 +224 @@
   knn6.train();
   knn6.predict(mlw3,prediction1); 
-  // std::cout << "train:\n" << mlw1 << std::endl;
-  // std::cout << "test:\n" << mlw3 << std::endl;
-  // std::cout << "pred:\n" << prediction1 << std::endl;
+  result1(0,0)=0;
+  result1(0,2)=result1(1,1)=result1(1,3)=1.0;
+  result1(0,1)=result1(0,3)=result1(1,0)=result1(1,2)=2.0;
+  slack = deviation(prediction1,result1); 
+  if (slack > slack_bound || std::isnan(slack)){
+    *error << "Difference to expected prediction too large\n";
+    *error << "slack: " << slack << std::endl;
+    *error << "expected less than " << slack_bound << std::endl;
+    ok = false;
+  }
+